"Only werewolves?" For a moment, John seems surprised by this, but it fades as soon as he finishes his thought. "No whywolves or whenwolves?"

Ahh, classic gag. Almost dad-joke-tier, but still a good one. He seems a little too pleased with it, but really, he couldn't have asked for a better setup.

"So. Wait. Did you fight a werewolf? I guess you won, but I thought you had to use silver bullets for that?"